Means for regulating the speed of internal-combustion engines.



No. 832,901. PATENTED OCT. 9, 1906.

J. GROUVELLE &H. ARQUEMBOURG. MEANS FOR REfHTLA'ITING: THE SPEED OF INTERNAL COMBUSTION ENGINES.

APPLICATION FILED SEPT. 19, 1903.

2 BREETSSHEBT 1.

Witnesses; 1% 1/0 ntars.

um owc No. 832.901. I PATENTED OCT. 9, 1906.

J. GROUVELLE & H. ARQUEMBOURG. v I MEANS FOR REGULATING THE SPEED OF INTERNAL COMBUSTION ENGINES.

APPLICATION FILED SEPT. 19, 1903.

2 SKEETS-BHEET 2.

III

UNITED STATES PATENT OFFICE. JULES enouvELLE AND Heine ARQUEMBOURG, onfrAnrs, FRANCE. MEANS FOR Rtcumme THE SPEEDOF lNTERNAL-COMBUSTION ENGINES.

France, have invented certain new and useful Improvements in Means for Regulating the Speed of Internal-Combustion Engines,

of which the following is a specification.

This invention relates to means applicable to the regulation of the s eed of internalcombustion engines; and t 6 object of the invention is to, provide regulating -rneans whereby Water under pressure is utilized as the medium for actuating theregulatin de- The variation in the pressure 0 water used for cooling the parts of the engine, due to varying speed of the engine, acts to control and vary proportionately the sup ly of volatile combustible liquid to the car ureter of the engine. Means in the nature of Valves, are su plied to control the flow of the water throng 1 theregulator.

1 In the accom anying drawings, which illus' trate an embo iment of the inynt'ion, Fig ure 1 is a somewhat diagrainniatic general view of the engine and its ap liances on a relatively small scale. The ot er views are details on a larger scale, Fi 2- being a se:- tional elevation of the diap hragm-regulator and its accessories; and Figs. 3, 4, and 5 are sectional views of the multiple-way valve. Fig. 6 is a view similar to Fig. 1, butillnstrating a slight modification. Fig. 7 is an I enlarged sectional view of the cut-oil cook 7c.

i vaporizer and inixe-rof the carburetor.

. is driven through any suitable means.

Referring to general view, F ig. 1, a desig nates the vessel to contain the volatile conibustible liquid, in which the liquid is 1naintained at a constant level by a float. Z1 is the c is the pipe which conveys the carbureted air to the engine. (I designates the engine-cylinder and crank-chainber. e is the exhaustoutlet for the products of combustion. .r is the pump which circulates the coolingwater through the jackets of the water. f is the ily-wheel of the engine, from which the pump is the refrigerator or cooler for the water. .2 is the water reservoir or tank. :r is the. pipe connecting the eduction side of the pump with the tank 2. is the pipe connecting the cylindenjacket with the induction side of the pump. 2 is the pipe which supplies wa- Specification of Letters Patent.

I Application filed September 19, 1903. Serial No. 173,803.

rizer I) of the carbureter.

Patented Oct. 9, 1906.

ter from the tank .2 to the cylinder-jacket. h designates-invthis figure the diaphra chamber 'of .the re relatively slender pipe which connects at one end with the up er part of the diaphragmchamber and at t 'e other end enters the pipe 9; and is curved at its extremity in the manner of a Pitot tube ,with its open end directed toward the pump. j is a tube or pipeof considerably larger diameter than the ipe g and connecting at one end with the cl iamber h, the other end extending back to the tankz. 7c is a cut-off cock or valve in the pipe j. This device will have, by preference, a conical spin dle valve with a screw-threaded stem. to designates a multiple-way cook or valve in the i i ber his valve controls the flow through a by-pass 7" about the throttle or cut-off k.

The water may flow through the by-pass o the pipe j beyond or flow directly --to't e tank 2.

Referring to Fig. 2, in the broader part of the chamber 72, is a flexible diaphragm l, and the tubes 9 and j connect with the chamber above'said dia liragm. A valve-stem q, se cured to the diaphragm, is provided below with a valve T, which controls the 'fiow through the lower part ofthe chamber of the volatile liquid from the vessel (1 to the vapo- The stem. g is prolonged above the diaphragm and isguided in a bore in a screw-plug m in the top-of the chamber. On this extension is aspring n, and on a similar extension of-the stem below the valve 1* is a spring 8. The screw m can be employed to re ulate thetension of the springs 'n and 8. he upper spring n'acts to ten s to open the valve 7. There are apertures p in the chamber it below the diaphragm in order to connect that part ofithe chamber h with the atmosphere.

Figs. 3, 4, and 5 show the multiple-way valve to in its three positions. Fig. 3 shows the plug 22 of the valve so set that the by-pass j is closed. Fig. 2 shows the plug so set that the llow from the chamber h to the tank 2 is closed, and Fig. 5 shows said plug so set that the by-pass is open and the direct way to the tank 2 is closed.

-As the water from the pipe m fiows through the tube 9 to the chamber h, above the diaphragm therein, it will be obvious that any I lator, to'be hereina er more particularly ascribed. g designates a between the cock is and the cham-- compensate the lower sprung 8,,andthe latter.. 5

LOO

pressure it may exert on the diaphragm will tend to close the valve 1, and thus act to reduce the supply of volatile liquid to the engine, thereby diminishing the speed of the latter. Now if the valve w be set as in F igI '3 with the direct passage open for the flow in the direction of the arrows in Fig. 1, the operation will be as follows: The water forced by the pump as throu h the tube 9 to the diaphragm-chamber will exert a pressure on the diaphragm which is proportioned to the speed of the pump, and therefore of the engine, and also to the resistance which is due to the small diameter of the tube 9 and the extent of opening of the cut-off valve is. If this valve k be fully closed, the pressure on the diaphragm-chamber will be equal to that at the receiving end of the tube 9, for the reason that the pipes j and 3" being cut off the resistance arising from thesmall diameter of the tube g cannot be considered, and, more over, if the tension of thespring s be so regulated that the differential tension of the two springs n and s is in equilibrium with the above-mentioned pressure the engine will wor at a speed which must be considered the minimum speed desired, this minimum special case.

' entirely.

speed being, moreover, variable to suit each If the cock k be now opened more or less, the pressure in the chamber h and on the diaphragm will diminish and the valve 7 rise, thus increasin the supply of the volatile liquid, while, on the other hand, the water will circulate in the tubes g and j in such a way that the engine and pump will run at a greater speed, whereby the water, in spite of the opening. for its flow by the valve It, will again accumulate pressure on the diaphragm in the chamber h and permit the diapl'iragm to again adjust itself into equilibrium with the differential tension of the springs n and s. This has the result of regulating the engine to a greater speed, which will increase proportionately to the extent of opening of the valve lc. if at any time or for any reason it is desired to diminish thespeed of the engine very rapidly, it will suflice, without touching the valve k, which still remains open to the extent proportioned to the speed previously desired, to turn the plug '0 of the valve w to the position seen in Fig. 4, thus cutting oil the flow through the tube 1' This will cause such an increase of pressure on the diaphragm that the valve 1' will be moved at once toward its seat. On the contrary, if at any time it is desired to increase the speed of the engine rapidly it will sullicc, without touching the valve It, to turn the plug of the valve w to the position seen in Fig. 5, thus opening fully the by-pass j about the valve Ir. This will so reduce the pressure on the diaphragm that the valve 1" will instantly rise.

Fig. (3 shows the by-pass j extending dircctly to the tank .2 instead of bcing connected with the pipe 7' beyond'the valve k, as in Fi 1.

(")bviously the details of the construction shown may be varied without departing from the invention. For example, the tube 9 is made relatively small as a simple and be disposed or constructed precisely as herein shown. its function is to regulate the quantity of explosive gases or vapor supplied to this engine, and so long as it effects this object its particular arrangement and dispositionilg not essential to the present invention.

Having thus described our invention, we claim-.-

1. A device for the purpose specified, having mechanism for regulating the supply of combustible fluid to the engine, said mechanism including a diaphragm-chamber anddiaphragm, means for forcing water into and through said diaphragmchamber with a pressure pro ortioned to the speed of the engine, manua ly-operatable means for regulating the flow of the water from the diaphragmchamber, and separate manually-cperatable means for wholly opening-and wholly shutiing ofl said flow from the diaphragm-cham- 2. An internal-combustion engine, having a water-tank, a circulating-pipe connecting said tank with the jacket of the engine, a circulating-pump for said water, driven by the engine at a speed proportioned to the speed of the engine, a vessel to contain a'volatile combustible liquid, a carbureter, and pipes cor? necting said vessel" with the carbureter a d the carhureter with the engine, in combination with speed-regulating means, comprising a diaphragm chamber, a diaphragm therein, a valve 7' which controls the supply of volatile liquid ,to the carbureter, a stem (1 connecting the diaphragm with said valve, a spring a tending to close said valve, a spring 8 tending to open said valve, a tube .9 of restricted capacity which supplies water from the reduction side of the pump to the diaphragm-chamher, a pipe at the outlet of the said chamber, a throttle-valve k" in said pipe, a by-pass j, and a multiple-way valve '11], controlling the flow through the pipe and said hy-pass.

In testimony whereof we have signed our JULES GROUVELLE. HENRI ARQUEMBOUR Witnesses:

l lnouwao (.miznon, (Matias MARAIS. 

